Construction quotation and BOQ checks in Kerala
Hold your own numbers before any contractor number arrives. Quotes are compared line by line against your baseline - never total against total.
The checks at this stage (9)
- Identical tender pack sent to 2+ contractors
Same drawings, same spec sheet, same BOQ format to every bidder - otherwise the comparison is fiction. Different packs produce quotes that cannot honestly be compared at all.
- Quote comparison and conflicts pass done
Every quote checked line by line against your baseline and against each other - including the footnotes, where exclusions hide. The known omissions get named: termite treatment, waterproofing warranty, debris removal and more.
- Negotiation round held on the comparison verdicts
The comparison's open verdicts ARE the negotiation agenda — every 'fail' and 'not_found' is a line to resolve while you can still walk away. Negotiation happens line by line against your own baseline, never as a percentage off the total: a total discount with the scope unchanged usually returns as thinner specification or an extra later.
- Grades and thicknesses are written down, not just brands
A quote can name an expensive cement and still not say what strength the concrete will be. Brand is what you are sold; grade is what holds the house up. This was the single most common gap.
- Waterproofing is scoped everywhere water goes
Waterproofing is the most commonly missing item in Kerala quotations, and the one whose absence you discover in the first monsoon after moving in. Partial cover is nearly as bad: several quotes waterproofed upstairs bathrooms and not the ground-floor ones.
- How the work will be measured is agreed before it is priced
A rate per square foot means nothing until both of you agree what is being counted. Several agreements let the area be re-measured after completion with no method stated and no cap - which makes the final price unknowable when you sign it.
- The things you cannot occupy without are in the price
A house is not liveable without somewhere for the water to come from and the waste to go. Septic tanks, soak pits, sumps and overhead tanks were missing from quotations often enough that their absence should be assumed until you find them.
- The electrical safety layer is named, not assumed
Quotations routinely list premium wire and switch brands and say nothing about the devices that stop a shock or a fire. The expensive-looking part of the electrical scope is not the part that protects anybody.
- What the quote leaves out, in writing
Most disputes are not about the price of what is in the quote - they are about what was never in it. Budget packages in Kerala commonly exclude the same items, and the exclusions are rarely printed as a list.
Consider and compare: the decisions here
How you buy the construction
Item-rate full contract, square-foot rate, or labour-only with you supplying materials. It shapes every incentive after it.
Item-rate
Pick it when: Your drawings are strong and you want line-by-line accountability.
Costs about the same
- Rates comparable line by line against your BOQ
- Single accountability
- Needs the strong drawings your design stage enforced
- More paperwork at every bill
Sq.ftMost common
Pick it when: You accept annexure discipline for one simple headline number.
Costs about the same
- One simple headline number
- Familiar to every Kerala contractor
- Everything lives in the annexure
- Extra-work disputes concentrate here
Labour
Pick it when: You can manage procurement personally, on the ground, every week.
Usually costs less
- Material quality in your hands
- No contractor margin on materials
- You become the procurement manager
- Hard for remote owners
Changing your mind later: Switching models after tender means a new pack and a fresh quote round - 2-3 weeks - and quotes already received stop being comparable.
What good work looks like
What makes two quotes actually comparable
Comparability is manufactured before the quotes arrive: the same drawings, the same spec sheet and the same BOQ format to every bidder. Then each quote is read line against line - and every footnote is classified as an exclusion, a contradiction or a variation before any total is trusted.
- Every bidder confirms receiving the identical pack
- Each quote priced against the same line items
- Every footnote read and classified, none skipped
- Bidders pricing different drawing revisions
- Totals compared while the lines go unread
- Exclusions discovered only after selection
What a real BOQ contains
Item-wise quantities with units and a stated basis, following the measurement conventions - concrete by volume, steel by weight, plaster by area - derived from the drawings. And its arithmetic must survive your calculator: subtotals that do not re-add are the first red flag.
- Every quantity carrying a unit and a stated basis
- Concrete in cubic metres, steel in kilograms - not lumpsums
- Subtotals that re-add correctly on your own calculator
- Lumpsum lines standing in for measurable quantities
- Rates printed without units
- Totals that fail a simple re-addition
IS 1200 (measurement conventions)
The known-omission sweep, on paper
Eight lines get hunted in every quote before any rupee is compared: termite treatment, waterproofing warranty, slab thickness stated, steel grade stated, electrical point counts, external works, site water and power, debris removal. Each is present, or marked missing - per quote, in writing.
- All eight items found or marked missing, quote by quote
- Missing items priced before selection, not after
- The sweep table filed together with the quotes
- An omission surfacing as extra work mid-build
- Included accepted with no line actually saying so
- No quote carrying the waterproofing warranty - and nobody noticing
Negotiating from the verdicts, not from the total
Take each open verdict from the comparison into the conversation: an omission gets priced or written in as included; a specification conflict gets resolved to the frozen spec sheet, in writing; a rate far above your baseline for the same specification gets justified or moved. The result of every concession is a revised quote line, not a verbal assurance — the revised document is what P4 reads.
- Every 'fail' and 'not_found' verdict either resolved in a revised quote or consciously accepted
- Concessions landing as revised WRITTEN lines, reflected in the copy the agreement will incorporate
- The specification held constant while the number moves — a price that drops with the spec is not a discount
- Rounds documented, so the version signed at P4 is traceably the version negotiated
- A headline-percentage discount recovered through substitution and extras across the build
- Verbal assurances at negotiation, absent from the agreement the advance is paid against
Kolo quotation comparison methodology — negotiation pass
Red flags and money traps
Exclusions live in small print: water and power during construction, debris removal, external works, the compound wall. Two quotes a lakh apart are often the same quote with different footnotes. Read every margin note as a price.
Read twice: Every footer and asterisk. Classify each one: exclusion, contradiction, or variation.
A cheaper total can hide thinner slabs, lower grades and missing scope. The only honest comparison is line by line against your own baseline - same drawings, same spec, same format to every bidder.
Never: Choose on the bottom-line number alone. The bottom line is the least informative line.
For comparability every bidder must receive the same drawings, spec sheet, bill-of-quantities format, inclusions and exclusions list, and payment-terms basis.
Trade practice, not a code: Trade practice on Indian sites, rather than a published standard.
For any area-billed or quantity-billed line, ask which measurement standard applies and get it named in the document. IS 1200 sets out what is included, what is deducted and whether openings come out. Where the area is called approximate, ask what happens if the re-measurement is larger, and get a cap.
Source: IS 1200 - Methods of measurement of building and civil engineering works
Go through the quote looking for each of: septic tank, soak pit, underground sump, overhead tank and its capacity, external drainage to the septic tank, and rainwater harvesting where the rules require it. Anything absent is money you will spend later, at a worse moment, while living on site.
Source: Kolo review of Kerala construction quotations and agreements
Ask for the exclusions as their own section, and check it against what these packages usually leave out: site clearing and earth filling, waterproofing, damp-proof course and anti-termite, external plumbing and the drain to the septic tank, lights and fans, wardrobes and kitchen, car porch and driveway, compound wall and gate, elevation detailing and cladding, and all interior work. Anything you assumed was included and is not, add up now.
Source: Kolo review of Kerala construction quotations and agreements